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51.
This article sets out to investigate the current paradoxical roles of border control agencies in order to contribute to the theoretical debate on border porosity and related security issues in West Africa. The colonial demarcation of African borders accounts for their porous nature initially, as borderland populations challenged the unjust scission of their cultural, economic, geographical and geopolitical spaces. However, new forms of porosity also evolved over time, masterminded by new actors. Drawing on the Ghana–Togo border case, and through interviews, observation and documentary analysis, this article argues that border control agencies are partly responsible for the current border porosity and attendant security problems as their jurisdiction has shifted to a multi-layered border parasitism. The article is not, however, an attack on border law enforcement agencies; rather it attempts to explore their roles in shielding the region, already exposed to terrorism and piracy, from further security threats.  相似文献   
52.
从1917年胡适的《白话诗八首》开始,新诗已走过近百年的历程,在近一个世纪的发展中,一代代诗人的努力使新诗形成了迥异于旧体诗的独特形式和创新品格,并在探索中形成了散文化倾向、扩充新意象、不断创新探索等特色。  相似文献   
53.
C4ISR系统需求开发足系统开发的一项重要内容.提出基于仿真的C4ISR系统需求开发的方法,分析了面向仿真的C4ISR系统需求体系并给出了其构成,提出基于仿真的C4ISR系统需求开发过程,重点探讨了基于仿真的C4HSR系统需求验证支持技术,分析了需求验证仿真建模技术和基于需求描述生成需求验证仿真模型技术的实现途径,为基于仿真的C4SR系统需求开发提供了方法基础.  相似文献   
54.
支架式教学法在小学语文课堂教学中的应用对培养学生解决问题能力和自主学习能力具有明显效果。基于最近发展区理论和建构主义学习理论,从支架式教学法在小学语文课堂教学实施的五个环节,即尊重学生原有基础、创设教学情境、启发学生独立思考、鼓励学生协作学习和最终结果评价,阐述了支架式教学法在小学语文课堂教学中的应用。  相似文献   
55.
Africa has emerged as a strategic location for transcontinental narcotics trade. Particularly the West African subcontinent has turned into a cocaine warehousing and trans-shipment hub along the way to the European underground markets. At this juncture, African drug networks (ADNs) began to play a momentous role in global drug trade, and pose a considerable threat to international security, as they operate in more than 80 countries. The United Nations Office on Drugs and Crime, Interpol, and Europol perceive ADNs as one of the primary issues in international counter-narcotics policy. These agencies have launched several multilateral initiatives to contain the West African threat. None of these initiatives, however, retarded the expansion of the problem. Indeed, the containment efforts turned out to be quite embryonic. The ADNs eventually entered the Turkish market by the early 2000s. West African drug networks (WADNs) in particular have begun to operate within Turkey extensively, often supplying and distributing drugs. The gravity of the threat became ever more serious by 2012. The upsurge of the new threat has compelled the Turkish drug-law enforcement agencies to adopt new policies and counter-strategies. These policies have to be based upon proper strategic analysis of the threat. This paper seeks to address the need for a threat assessment of ADNs. It investigates the dimensions of the problem, profiles the members of WADNs, their modes of operation, and the factors that compelled them to exploit the illicit Turkish drug markets. The analyses are based upon the scrutiny of 227 narcotic interdictions files and statements from the African individuals in these case files. The paper concludes by presenting policy implications and recommendations for the Turkish security and foreign-policy institutions to cope with this impending threat.  相似文献   
56.
Since the mid-twentieth century, the East and Southern African regions have been mired in complex and overlapping security and development challenges, including ethnopolitical conflicts, terrorist insurgencies, the proliferation of small arms and light weapons (SALWs), and overwhelming economic crisis. These challenges have had implications for human security, socio-economic development, territorial authority, sovereignty and the stability and legitimacy of political regimes in the affected states. The adequacy and relevance of the regional responses to these challenges is the subject of ongoing debate, to which this paper now adds. Among other factors, this paper identifies competition for regional dominance and institutional inadequacies as accounting for the inability of regional governance bodies to respond adequately to the challenges they face. Consequently, it recommends the expansion of the mandate of the Regional Economic Communities (RECs) beyond regional economic integration to include peacebuilding and a deepening of the institutional efforts focused on security cooperation and conflict management.  相似文献   
57.
国外军用直升机的改进与发展   总被引:2,自引:0,他引:2  
军用直升机特别是武装直升机在现代战争中的突袭和多功能作用引起了防空作战的广泛关注。概述了重型武装直升机Apache 的多种改进,讨论了军用直升机的发展趋势。  相似文献   
58.
从面向对象的程序设计的角度,剖析了CLIENT/SERVER环境下的通用数据库开发工具POWERBUILDER(PB)的特点、基本结构及其开发数据库应用系统的方法。  相似文献   
59.
本文阐述了各主要海军国家在研究新型高能动力电池和高比功率推进电机两个领域中的状况,并对发展中的问题作了简要分析。  相似文献   
60.
From 2006 to 2011, al-Qaeda's East African proxy, al-Shabaab, served as the de facto ruling party of Somalia despite the efforts of the internationally recognised Transitional Federal Government (TFG). During these five years, a violent struggle between al-Shabaab and the peacekeeping force of the African Union Mission in Somalia (AMISOM) resulted in thousands of dead civilians, hundreds of thousands of internally displaced persons and a strategic environment inhospitable to reconciliation, recovery or development. By 2012, AMISOM was able to break the deadlock and force al-Shabaab from Mogadishu and Kismayo. In order to continue the momentum, the African Union and other partner nations must support the TFG in neutralising al-Shabaab throughout Somalia and providing good governance to its constituents. Al-Shabaab's revenue streams must be shut down and its offensive capability must be degraded while the strategic environment is shaped to ensure that conditions conducive to a revival do not exist. Failure to do so will likely see Somalia continuing to produce Islamist extremists and pirates to menace international maritime traffic in the western Indian Ocean, destabilise East Africa and adversely impact millions.  相似文献   
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